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A227592
Number of nX4 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X5 binary array having nonzero determinant
1
16, 256, 3840, 56928, 841984, 12420672, 182940432, 2693032800, 39634170368, 583231191264, 8581920953616, 126274620899072, 1857983333261344, 27337874035216704, 402240996868184512, 5918440689583411776
OFFSET
1,1
COMMENTS
Column 4 of A227594
FORMULA
Empirical recurrence of order 63 (see link above)
EXAMPLE
Some solutions for n=4
..0..0..1..0....1..1..1..0....1..0..0..0....1..1..0..1....0..1..0..0
..1..1..1..1....1..1..0..1....0..1..0..0....1..1..1..1....0..1..0..1
..1..0..0..1....0..0..0..1....1..1..1..0....0..0..0..0....1..0..0..0
..0..1..0..0....0..1..0..1....0..1..1..1....0..0..0..0....0..0..1..0
CROSSREFS
Sequence in context: A206571 A206791 A221665 * A206840 A222932 A220107
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 17 2013
STATUS
approved